Wild WiFi latency on Intel driver - 13.04

Hey Everyone

I'm getting high and inconsistent latency on WiFi connections... As a baseline I'm sitting next to the router, when I boot Windows and ping the router I get an average of 5ms. If I boot into Ubuntu 13.04 I get anything from 25ms up to 200ms and occasional lost packets...

My hardware is a relatively new Dell XPS 13 Ultrabook and the built-in WiFi device is an Intel one. My Ubuntu 13.04 is up to date and I'm just using the standard drivers provided by the Kernel/Ubuntu.